Finding the Third Proportional to 191,817 and 300,897

Step by Step Solution

1. Step 1: Write the proportion equation
   191,817 : 300,897 = 300,897 : x
2. Step 2: Convert to fraction form
   191,817/300,897 = 300,897/x
3. Step 3: Cross multiply
   191,817x = 300,897 × 300,897
4. Step 4: Simplify right side
   191,817x = 90,539,004,609
5. Step 5: Solve for x
   x = 90,539,004,609/191,817
6. Step 6: Final answer
   x = 472,007.20